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Ummat V, Sivagnanam SP, Rai DK, O'Donnell C, Conway GE, Heffernan SM, Fitzpatrick S, Lyons H, Curtin J, Tiwari BK. Conventional extraction of fucoidan from Irish brown seaweed Fucus vesiculosus followed by ultrasound-assisted depolymerization. Sci Rep 2024; 14:6214. [PMID: 38486008 PMCID: PMC10940655 DOI: 10.1038/s41598-024-55225-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 02/21/2024] [Indexed: 03/18/2024] Open
Abstract
Fucoidan has attracted considerable attention from scientists and pharmaceutical companies due to its antioxidant, anticoagulant, anti-inflammatory, anti-tumor, and health-enhancing properties. However, the extraction of fucoidan from seaweeds often involves the use of harsh chemicals, which necessitates the search for alternative solvents. Additionally, the high viscosity and low cell permeability of high molecular weight (Mw) fucoidan can limit its effectiveness in drug action, while lower Mw fractions exhibit increased biological activity and are also utilized as dietary supplements. The study aimed to (1) extract fucoidan from the seaweed Fucus vesiculosus (FV) using an environmentally friendly solvent and compare it with the most commonly used extraction solvent, hydrochloric acid, and (2) assess the impact of ultrasound-assisted depolymerization on reducing the molecular weight of the fucoidan extracts and examine the cytotoxic effect of different molecular weight fractions. The findings indicated that the green depolymerization solvent, in conjunction with a brief ultrasound treatment, effectively reduced the molecular weight. Moreover, a significant decrease in cell viability was observed in selected samples, indicating potential anticancer properties. As a result, ultrasound was determined to be an effective method for depolymerizing crude fucoidan from Fucus Vesiculosus seaweed.
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Affiliation(s)
- Viruja Ummat
- Teagasc Ashtown Food Research Centre, Teagasc, Ashtown, Dublin 15, Ireland.
- UCD School of Biosystems and Food Engineering, University College Dublin, Belfield, Dublin 4, Ireland.
- BiOrbic Bioeconomy SFI Research Centre, University College Dublin, Belfield, Dublin 4, Ireland.
| | | | - Dilip K Rai
- Teagasc Ashtown Food Research Centre, Teagasc, Ashtown, Dublin 15, Ireland
| | - Colm O'Donnell
- UCD School of Biosystems and Food Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - Gillian E Conway
- In Vitro Toxicology Group, Institute of Life Science, College of Medicine, Swansea University, Swansea, Wales, SA3 5AU, UK
| | - Shane M Heffernan
- Applied Sports Science Technology and Medicine Research Centre (A-STEM), Faculty of Science and Engineering, Swansea University, Swansea, Wales, SA3 5AU, UK
| | | | - Henry Lyons
- Nutramara Ltd., Beechgrove House Strand Street, Tralee, Ireland
| | - James Curtin
- School of Food Science and Environmental Health, College of Science and Health, Technological University Dublin, Dublin, D07 ADY7, Ireland
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Wu L, Zhang X, Zhao J, Yang M, Yang J, Qiu P. The therapeutic effects of marine sulfated polysaccharides on diabetic nephropathy. Int J Biol Macromol 2024; 261:129269. [PMID: 38211917 DOI: 10.1016/j.ijbiomac.2024.129269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/30/2023] [Accepted: 01/03/2024] [Indexed: 01/13/2024]
Abstract
Marine sulfated polysaccharide (MSP) is a natural high molecular polysaccharide containing sulfate groups, which widely exists in various marine organisms. The sources determine structural variabilities of MSPs which have high security and wide biological activities, such as anticoagulation, antitumor, antivirus, immune regulation, regulation of glucose and lipid metabolism, antioxidant, etc. Due to the structural similarities between MSP and endogenous heparan sulfate, a majority of studies have shown that MSP can be used to treat diabetic nephropathy (DN) in vivo and in vitro. In this paper, we reviewed the anti-DN activities, the dominant mechanisms and structure-activity relationship of MSPs in order to provide the overall scene of MSPs as a modality of treating DN.
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Affiliation(s)
- Lijuan Wu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Yushan Road, Qingdao 266003, China; Center for Innovation Marine Drug Screening &Evaluation, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Marine Biomedical Research Institute of Qingdao, Qingdao, 266071, China.
| | - Xiaonan Zhang
- Center for Innovation Marine Drug Screening &Evaluation, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Marine Biomedical Research Institute of Qingdao, Qingdao, 266071, China
| | - Jun Zhao
- Center for Innovation Marine Drug Screening &Evaluation, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Marine Biomedical Research Institute of Qingdao, Qingdao, 266071, China
| | - Menglin Yang
- Center for Innovation Marine Drug Screening &Evaluation, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Marine Biomedical Research Institute of Qingdao, Qingdao, 266071, China
| | - Jinbo Yang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Yushan Road, Qingdao 266003, China; Center for Innovation Marine Drug Screening &Evaluation, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Marine Biomedical Research Institute of Qingdao, Qingdao, 266071, China.
| | - Peiju Qiu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Yushan Road, Qingdao 266003, China; Center for Innovation Marine Drug Screening &Evaluation, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; Marine Biomedical Research Institute of Qingdao, Qingdao, 266071, China.
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Ramanjooloo A, Chummun Phul I, Goonoo N, Bhaw-Luximon A. Electrospun polydioxanone/fucoidan blend nanofibers loaded with anti-cancer precipitate from Jaspis diastra and paclitaxel: Physico-chemical characterization and in-vitro screening. Int J Biol Macromol 2024; 259:129218. [PMID: 38185297 DOI: 10.1016/j.ijbiomac.2024.129218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/17/2023] [Accepted: 01/02/2024] [Indexed: 01/09/2024]
Abstract
Nanofibers for drug delivery systems have gained much attention during the past years. This paper describes for the first time the loading of a bioactive precipitate (JAD) from the marine sponge Jaspis diastra in PDX and fucoidan-PDX. JAD was characterized by LC-MS/MS and the major component was jaspamide (1) with a purity of 62.66 %. The cytotoxicity of JAD was compared with paclitaxel (PTX). JAD and PTX displayed IC50 values of 1.10 ± 0.7 μg/mL and 0.21 ± 0.12 μg/mL on skin fibroblasts L929 cells whilst their IC50 values on uveal MP41 cancer cells, were 2.10 ± 0.55 μg/mL and 1.38 ± 0.68 μg/mL, respectively. JAD was found to be less cytotoxic to healthy fibroblasts compared to PTX. JAD and PTX loaded scaffolds showed sustained release over 96 h in physiological medium which is likely to reduce the secondary cytotoxic effect induced by JAD and PTX alone. The physico-chemical properties of the loaded and unloaded scaffolds together with their degradation and action on tumor microenvironment by using L929 and MP41 cells were investigated. JAD and PTX at a concentration of 0.5 % (drug/polymer, w/w) in the electrospun mats prevented growth and proliferation of L929 and MP41 cells. Co-culture of L929 and MP41 showed that the JAD and PTX loaded mats inhibited the growth of both cells and caused cell death.
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Affiliation(s)
- Avin Ramanjooloo
- Biomaterials, Drug Delivery & Nanotechnology Unit, Centre for Biomedical & Biomaterials Research, University of Mauritius, Réduit, Mauritius; Mauritius Oceanography Institute, Avenue des Anchois, Morcellement de Chazal, Albion, Mauritius
| | - Itisha Chummun Phul
- Biomaterials, Drug Delivery & Nanotechnology Unit, Centre for Biomedical & Biomaterials Research, University of Mauritius, Réduit, Mauritius
| | - Nowsheen Goonoo
- Biomaterials, Drug Delivery & Nanotechnology Unit, Centre for Biomedical & Biomaterials Research, University of Mauritius, Réduit, Mauritius
| | - Archana Bhaw-Luximon
- Biomaterials, Drug Delivery & Nanotechnology Unit, Centre for Biomedical & Biomaterials Research, University of Mauritius, Réduit, Mauritius.
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Krishna Perumal P, Dong CD, Chauhan AS, Anisha GS, Kadri MS, Chen CW, Singhania RR, Patel AK. Advances in oligosaccharides production from algal sources and potential applications. Biotechnol Adv 2023; 67:108195. [PMID: 37315876 DOI: 10.1016/j.biotechadv.2023.108195] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 06/02/2023] [Accepted: 06/05/2023] [Indexed: 06/16/2023]
Abstract
In recent years, algal-derived glycans and oligosaccharides have become increasingly important in health applications due to higher bioactivities than plant-derived oligosaccharides. The marine organisms have complex, and highly branched glycans and more reactive groups to elicit greater bioactivities. However, complex and large molecules have limited use in broad commercial applications due to dissolution limitations. In comparison to these, oligosaccharides show better solubility and retain their bioactivities, hence, offering better applications opportunity. Accordingly, efforts are being made to develop a cost-effective method for enzymatic extraction of oligosaccharides from algal polysaccharides and algal biomass. Yet detailed structural characterization of algal-derived glycans is required to produce and characterize the potential biomolecules for improved bioactivity and commercial applications. Some macroalgae and microalgae are being evaluated as in vivo biofactories for efficient clinical trials, which could be very helpful in understanding the therapeutic responses. This review discusses the recent advancements in the production of oligosaccharides from microalgae. It also discusses the bottlenecks of the oligosaccharides research, technological limitations, and probable solutions to these problems. Furthermore, it presents the emerging bioactivities of algal oligosaccharides and their promising potential for possible biotherapeutic application.
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Affiliation(s)
- Pitchurajan Krishna Perumal
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Cheng-Di Dong
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Sustainable Environment Research Centre, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Ajeet Singh Chauhan
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Grace Sathyanesan Anisha
- Post-Graduate and Research Department of Zoology, Government College for Women, Thiruvananthapuram 695014, Kerala, India
| | - Mohammad Sibtain Kadri
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung City-804201, Taiwan
| | - Chiu-Wen Chen
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Sustainable Environment Research Centre, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Reeta Rani Singhania
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India
| | - Anil Kumar Patel
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India.
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Luo B, Wang Z, Chen J, Chen X, Li J, Li Y, Li R, Liu X, Song B, Cheong KL, Zhong S. Physicochemical Characterization and Antitumor Activity of Fucoidan and Its Degraded Products from Sargassum hemiphyllum (Turner) C. Agardh. Molecules 2023; 28:2610. [PMID: 36985583 PMCID: PMC10057303 DOI: 10.3390/molecules28062610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/16/2023] Open
Abstract
Fucoidan has many biological functions, including anti-tumor activity. Additionally, it has been suggested that low-molecular-weight fucoidans have greater bioactivities. This study aimed to examine the degradation, purification, physicochemical characterization and in vitro antitumor activity of fucoidan from Sargassum hemiphyllum (Turner) C. Agardh. Fucoidan was isolated using DEAE-cellulose-52 (F1, F2), Vc-H2O2 degration, and Sepharose CL-6B gel (DF1, DF2) from crude Sargassum fucoidans. Physicochemical characteristics of four isolated fucoidans were examined using chemical and monosaccharide composition, average molecular weight (Mw), and FTIR. Furthermore, the anti-proliferative effects of purified fucoidans on human hepatocellular carcinoma cells (HepG2), human Burkitt Lymphoma cells (MCF-7), human uterine carcinoma cells (Hela) and human lung cancer cells (A549) were analyzed by MTT method. The apoptosis of HepG2 cells was detected by flow cytometry. Our data suggest that the contents of polysaccharide, L-fucose and sulfate of DF2 were the highest, which were 73.93%, 23.02% and 29.88%, respectively. DF1 has the smallest molecular weight (14,893 Da) followed by DF2 (21,292 Da). The four fractions are mainly composed of fucose, mannose and rhamnose, and the infrared spectra are similar, all of which contain polysaccharide and sulfate characteristic absorption peaks. The results of MTT assay showed that the four fractions had inhibitory effects on HepG2 and A549 in the range of 0.5-8 mg/mL, and the four fractions had strong cytotoxic effects on HepG2 cells. DF2 had the best inhibitory effect on HepG2 (IC50 = 2.2 mg/mL). In general, the antitumor activity of Sargassum fucoidans is related to the content of L-fucose, sulfate and molecular weight, and Sargassum fucoidan has the best inhibitory effect on HepG2 hepatocellular carcinoma cells. Furthermore, when compared to MCF-7, Hela, and A549 cells, Sargassum fucoidans had the best capacity to reduce the viability of human hepatocellular carcinoma cells (HepG2) and to induce cell apoptosis, proving itself to have a good potential in anti-liver cancer therapy.
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Affiliation(s)
- Baozhen Luo
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
| | - Zhuo Wang
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Jianping Chen
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Xuehua Chen
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
| | - Jiarui Li
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
| | - Yinghua Li
- Center Laboratory, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510120, China;
| | - Rui Li
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Xiaofei Liu
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Bingbing Song
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Kit-Leong Cheong
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Saiyi Zhong
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Province Engineering Laboratory for Marine Biological Products, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (B.L.); (Z.W.); (X.C.); (J.L.); (R.L.); (X.L.); (B.S.); (K.-L.C.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
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Sun X, Ai C, Wen C, Peng H, Yang J, Cui Y, Song S. Inhibitory effects of fucoidan from Laminaria japonica against some pathogenic bacteria and SARS-CoV-2 depend on its large molecular weight. Int J Biol Macromol 2023; 229:413-421. [PMID: 36587644 PMCID: PMC9800020 DOI: 10.1016/j.ijbiomac.2022.12.307] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022]
Abstract
Fucoidan is a highly sulfated polysaccharide with a wide range of bioactivities, including anti-pathogenic activity. However, the relationship between structure and activity of fucoidan in inhibiting pathogen infections remains unclear. Here, different-molecular-weight fucoidans were prepared by photocatalytic degradation followed by membrane ultrafiltration, and their chemical structures and anti-pathogenic microbiota activity were compared. Results showed that photocatalytic degradation could effectively degrade fucoidan while its structure block and sulfate groups were not destroyed obviously. Fucoidan (90.8 kDa) of 5 mg/mL could inhibit the growth of S. aureus, S. typhimurium and E. coli, but its degradation products, Dfuc1 (19.2 kDa) and Dfuc2 (5.5 kDa), demonstrated lower inhibitory effect. In addition, compared to Dfuc1 and Dfuc2, fucoidan showed stronger capability to prevent the adhesion of S. aureus, L. monocytogenes, V. parahaemolyticus and S. typhimurium to HT-29 cells. Moreover, the inhibitory effect against SARS-CoV-2 and the binding activity to S protein were also positively correlated to molecular weight. These results indicate that natural fucoidan with higher molecular weight are more effective to inhibit these pathogenic bacteria and SARS-CoV-2, providing a better understanding of the relationship between structure and activity of fucoidan against pathogenic microbiota.
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Affiliation(s)
- Xiaona Sun
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Chunqing Ai
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China; National & Local Joint Engineering Laboratory for Marine Bioactive Polysaccharide Development and Application, Dalian Polytechnic University, Dalian 116034, PR China
| | - Chengrong Wen
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China; National & Local Joint Engineering Laboratory for Marine Bioactive Polysaccharide Development and Application, Dalian Polytechnic University, Dalian 116034, PR China
| | - Haoran Peng
- Department of Biomedical Defense, Faculty of Naval Medicine, Naval Medical University (Second Military Medical University), Shanghai 200433, PR China
| | - Jingfeng Yang
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China; National & Local Joint Engineering Laboratory for Marine Bioactive Polysaccharide Development and Application, Dalian Polytechnic University, Dalian 116034, PR China
| | - Yuna Cui
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Shuang Song
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China; National & Local Joint Engineering Laboratory for Marine Bioactive Polysaccharide Development and Application, Dalian Polytechnic University, Dalian 116034, PR China.
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Yang M, Ren W, Li G, Yang P, Chen R, He H. The effect of structure and preparation method on the bioactivity of polysaccharides from plants and fungi. Food Funct 2022; 13:12541-12560. [PMID: 36421015 DOI: 10.1039/d2fo02029g] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Polysaccharides are not only the main components in the cell walls of plants and fungi, but also a structure that supports and protects cells. In the process of obtaining polysaccharides from raw materials containing cell walls, the polysaccharides on the cell walls are the products and also a factor that affects the extraction rate. Polysaccharides derived from plants and fungi have mild characteristics and exhibit various biological activities. The biological activity of polysaccharides is related to their chemical structure. This review summarizes the effects of the physicochemical properties and structure of polysaccharides, from cell walls in raw materials, that have an impact on their biological activities, including molecular weight, monosaccharide composition, chain structure, and uronic acid content. Also, the structure of certain natural polysaccharides limits their biological activity. Chemical modification and degradation of these structures can enhance the pharmacological properties of natural polysaccharides to a certain extent. At the same time, the processing method affects the structure and yield of polysaccharides on the cell wall and in the cell. The extraction and purification methods are summarized, and the effects of preparation methods on the structure and physiological effects of polysaccharides from plants and fungi are discussed.
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Affiliation(s)
- Manli Yang
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 211198, China.
| | - Wenjing Ren
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 211198, China.
| | - Geyuan Li
- College of pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ping Yang
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 211198, China.
| | - Rong Chen
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 211198, China.
| | - Hua He
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 211198, China. .,Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing 211198, China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
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Du B, Jeepipalli SPK, Xu B. Critical review on alterations in physiochemical properties and molecular structure of natural polysaccharides upon ultrasonication. ULTRASONICS SONOCHEMISTRY 2022; 90:106170. [PMID: 36183549 PMCID: PMC9526224 DOI: 10.1016/j.ultsonch.2022.106170] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/06/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Natural polymers, such as polysaccharides, cellulose, and starch, have been widely used in the chemical engineering, medicine, food, and cosmetics industries, which had a great many of biological activities. Natural polysaccharides origin from algae, fungi and plants were components of human diet since antique times. Ultrasonication achieved the breakage the polysaccharides reticulum in an ordered fashion. The factors of temperature, ratio of water/material, sonication frequency, time of exposure, pH of the sonication medium influenced the polysaccharide digestion. Sonication improved the enzyme catalysis over its substrate molecule. Positive health promoting slow digestive starch and resistant starch can be prepared quite easily by the sonication process. The aim of this review is to present the current status and scope of natural polymers as well as some emerging polymers with special characteristic. The physiochemical properties and molecular structure of natural carbohydrates under ultrasonic irradiation were also discussed. Moreover, Polysaccharide based films had industrial applications is formed by ultrasonication. Polysaccharide nanoparticles obtained by sonication had efficient water holding capacity. Sonication is an advanced method to improve the food quality. Hence, this review describes the effects of ultrasonication on physical, chemical, and molecular structure of natural polysaccharides.
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Affiliation(s)
- Bin Du
- Hebei Key Laboratoryy of Natural Products Activity Components and Function, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, PR China
| | - Syam P K Jeepipalli
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai 519087, PR China
| | - Baojun Xu
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai 519087, PR China.
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Zhang X, Wei Z, Xue C. Physicochemical properties of fucoidan and its applications as building blocks of nutraceutical delivery systems. Crit Rev Food Sci Nutr 2022; 62:8935-8953. [PMID: 34132606 DOI: 10.1080/10408398.2021.1937042] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Many bioactive ingredients with health effects such as antioxidant, anti-inflammatory and neuroprotective possess low bioavailability due to poor solubility and sensitivity. Fucoidan is an ideal material for encapsulating bioactive ingredients because of its unique physicochemical and biological properties, which can improve the function and application of bioactive ingredients. Nevertheless, there is still a lack of review about the physicochemical properties as well as functionalities of fucoidan and the application of fucoidan-based delivery systems in functional food. Hence, in this review, recent advances on the structure, chemical modification, physicochemical properties and biological activity of fucoidan are summarized. This review systematacially describes the recent update on the fucoidan as a wall material for delivering nutraceuticals with a broad discussion on various types of delivery systems ranging from nanoparticles, nanoparticle/bead complexes, emulsions, edible films, nanocapsules and hydrogels. Futhermore, the technical scientific issues of the application of fucoidan in the field of food are emphasized. On the basis of more comprehensive and deeper understandings, the review ends with a concluding remark on future directions of fucoidan-based delivery systems for purposes. Novel fucoidan-based delivery systems such as aerogels, Pickering emulsions, emulsion-filled-hydrogels, liposomes-in-fucoidan, co-delivery systems of bioactive igredients can be designed.
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Affiliation(s)
- Xiaomin Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Zihao Wei
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
- Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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10
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Chen CY, Wang SH, Huang CY, Dong CD, Huang CY, Chang CC, Chang JS. Effect of molecular mass and sulfate content of fucoidan from Sargassum siliquosum on antioxidant, anti-lipogenesis, and anti-inflammatory activity. J Biosci Bioeng 2021; 132:359-364. [PMID: 34389241 DOI: 10.1016/j.jbiosc.2021.06.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 05/17/2021] [Accepted: 06/13/2021] [Indexed: 12/13/2022]
Abstract
Macroalgae (seaweeds) are abundant in functional polysaccharides known for their unique biochemical activities. In this study, the antioxidant, anti-lipogenic, and anti-inflammatory activities of the fucoidan extracted from brown seaweed Sargassum siliquosum were investigated by 1,1-diphenyl-2-picrylhydrazyl (DPPH)-scavenging ability, lipid synthesis inhibition, and suppression of pro-inflammatory cytokine tumor necrosis factor-alpha (TNF-α) production, respectively. To examine the effect of molecular mass on fucoidan's bioactivities above, the extracted fucoidan was subject to hydrogen peroxide-mediated partial hydrolysis to obtain lower molecular mass compounds within the range of 107.3-3.2 kDa. Results indicated that fucoidan's antioxidant activity increased with a corresponding decrease in molecular mass; the dosage for the half-maximal response (EC50) dropped from 2.58 to 1.82 mg/mL when the molecular mass decreased from 107.3 to 3.2 kDa. In addition, both the anti-lipogenesis and anti-inflammatory activities of fucoidan were significantly enhanced by 71.1% and 36.7%, respectively, when the molecular mass decreased to about 3 kDa. To further test the effect of sulfation on fucoidan's bioactivities, low molecular mass fucoidan was treated with SO3-DMF to increase the sulfate content. The results indicated that when sulfate content increased from 18.7% to 32.1%, EC50 of DPPH decreased from 1.82 mg/mL to 0.86 mg/mL and the anti-inflammatory activity also increased by 35.2%; however, the anti-lipogenesis activity decreased.
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Affiliation(s)
- Chun-Yen Chen
- University Center for Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Shao-Hua Wang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Yu Huang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Nanzih District, Kaohsiung, Taiwan
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Nanzih District, Kaohsiung, Taiwan
| | - Chun-Yung Huang
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Nanzih District, Kaohsiung, Taiwan
| | - Chia-Che Chang
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan; Traditional Herbal Medicine Research Center, Taipei Medical University Hospital, Taipei, Taiwan; Department of Medical Research, China Medical University Hospital, Taichung, Taiwan; Department of Biotechnology, Asia University, Taichung, Taiwan
| | - Jo-Shu Chang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical and Materials Engineering, College of Engineering, Tunghai University, Taichung, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung, Taiwan.
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11
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Chen X, Sun-Waterhouse D, Yao W, Li X, Zhao M, You L. Free radical-mediated degradation of polysaccharides: Mechanism of free radical formation and degradation, influence factors and product properties. Food Chem 2021; 365:130524. [PMID: 34252626 DOI: 10.1016/j.foodchem.2021.130524] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 06/14/2021] [Accepted: 07/01/2021] [Indexed: 10/20/2022]
Abstract
Increasing studies focus on the degradation of polysaccharides by free radicals. The review mainly provides an overview of degradation of polysaccharides by free radicals generated from hydrogen peroxide (H2O2). Evidence suggests that free radicals generated from H2O2 can be generated by various mechanisms. It broke glycosidic bonds mainly through hydrogen abstraction, causing the degradation of polysaccharides. Its degradation efficiency is affected by many factors, such as the concentration of polysaccharides and H2O2, temperature and pH. In addition, free radical degradation could change the physicochemical and structural properties of polysaccharides, such as water solubility, thermal stability, molecular weight, monosaccharide composition, apparent morphology, and chain conformation, but it had little effects on the primary structure of polysaccharides. Besides, free radical degradation could also improve the bioactivities of polysaccharides, including antioxidant, antitumor and anticoagulant activities.
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Affiliation(s)
- Xiaoyong Chen
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China
| | - Dongxiao Sun-Waterhouse
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; School of Chemical Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Wanzi Yao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China
| | - Xiong Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China
| | - Mouming Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China
| | - Lijun You
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou, Guangdong 510640, China.
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12
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Purification and Structural Characterization of Sulfated Polysaccharides Derived from Brown Algae, Sargassum binderi: Inhibitory Mechanism of iNOS and COX-2 Pathway Interaction. Antioxidants (Basel) 2021; 10:antiox10060822. [PMID: 34063885 PMCID: PMC8223978 DOI: 10.3390/antiox10060822] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/06/2021] [Accepted: 05/17/2021] [Indexed: 11/17/2022] Open
Abstract
Among the components derived from brown algae, anionic sulfated polysaccharides, which contain sulfated fucose as the major monosaccharide, exert significant biological activities. In this study, we purified and structurally characterized sulfated polysaccharides from brown algae, Sargassum binderi (S. binderi; SBPs), and evaluated their biological activity in vitro and in vivo. The SBPs were separated based on their charges and their biophysical properties were investigated according to their functional groups, structural features, and molecular weights using FTIR, NMR, and MALS. Among all the SBPs, Fraction 4 (SBP-F4), with an average molecular weight of 2.867 × 105 g/mol, had the highest polysaccharide and sulfate contents (75.15 ± 0.25% and 24.08 ± 0.18%, respectively). The biological activities of SBP-F4 were investigated further in vitro and in vivo. Our results showed that SBP-F4 significantly suppressed the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) proteins in LPS-activated macrophages. Moreover, in the LPS-treated zebrafish model, a significant decrease in cell death and NO production was observed. Collectively, these results show that SBPs not only exert protective effects against LPS-induced cytotoxicity but also inhibit the activation and anti-inflammatory activity of macrophages. Therefore, polysaccharides derived from S. binderi are potential anti-inflammatory agents for use in clinical settings.
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Zayed A, El-Aasr M, Ibrahim ARS, Ulber R. Fucoidan Characterization: Determination of Purity and Physicochemical and Chemical Properties. Mar Drugs 2020; 18:E571. [PMID: 33228066 PMCID: PMC7699409 DOI: 10.3390/md18110571] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 12/13/2022] Open
Abstract
Fucoidans are marine sulfated biopolysaccharides that have heterogenous and complicated chemical structures. Various sugar monomers, glycosidic linkages, molecular masses, branching sites, and sulfate ester pattern and content are involved within their backbones. Additionally, sources, downstream processes, and geographical and seasonal factors show potential effects on fucoidan structural characteristics. These characteristics are documented to be highly related to fucoidan potential activities. Therefore, numerous chemical qualitative and quantitative determinations and structural elucidation methods are conducted to characterize fucoidans regarding their physicochemical and chemical features. Characterization of fucoidan polymers is considered a bottleneck for further biological and industrial applications. Consequently, the obtained results may be related to different activities, which could be improved afterward by further functional modifications. The current article highlights the different spectrometric and nonspectrometric methods applied for the characterization of native fucoidans, including degree of purity, sugar monomeric composition, sulfation pattern and content, molecular mass, and glycosidic linkages.
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Affiliation(s)
- Ahmed Zayed
- Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Gottlieb-Daimler-Straße 49, 67663 Kaiserslautern, Germany;
- Department of Pharmacognosy, Tanta University, College of Pharmacy, El-Guish Street, Tanta 31527, Egypt; (M.E.-A.); (A.-R.S.I.)
| | - Mona El-Aasr
- Department of Pharmacognosy, Tanta University, College of Pharmacy, El-Guish Street, Tanta 31527, Egypt; (M.E.-A.); (A.-R.S.I.)
| | - Abdel-Rahim S. Ibrahim
- Department of Pharmacognosy, Tanta University, College of Pharmacy, El-Guish Street, Tanta 31527, Egypt; (M.E.-A.); (A.-R.S.I.)
| | - Roland Ulber
- Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Gottlieb-Daimler-Straße 49, 67663 Kaiserslautern, Germany;
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14
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Lu KY, Jheng PR, Lu LS, Rethi L, Mi FL, Chuang EY. Enhanced anticancer effect of ROS-boosted photothermal therapy by using fucoidan-coated polypyrrole nanoparticles. Int J Biol Macromol 2020; 166:98-107. [PMID: 33091478 DOI: 10.1016/j.ijbiomac.2020.10.091] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/08/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023]
Abstract
Nanomaterial mediated cancer/tumor photo driven hyperthermia has obtained great awareness. Nevertheless, it is a challenge for improving the hyperthermic efficacy lacking resistance to stimulated thermal stress. We thus developed a bioinspired nano-platform utilizing inclusion complexation between photosensitive polypyrrole (Ppy) nanoparticles (NP) and fucoidan (FU). This FU-Ppy NP proved to be an excellent P-selectin-mediated, lung cancer-cell/tumor targeting delivery and specific accumulation, could augment cancer/tumor oxidative stress levels through producing cellular reactive oxygen species. Potent ROS/photothermal combinational therapeutic effects were exhibited by the bioinspired FU-Ppy NP through a selective P-selectin cancer/tumor targeting aptitude for the lung cancer cells/tumor compared with other nano-formulations. The usage of FU-Ppy NP also involves the potential mechanism of suppressing the biological expression of tumor vascular endothelial growth factor (VEGF). This FU biological macromolecule-amplified photothermally therapeutic nano-platform has promising potential for future medical translation in eradicating numerous tumors.
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Affiliation(s)
- Kun-Ying Lu
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC; Department of Biochemistry and Molecular Cell Biology, School of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Pei-Ru Jheng
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC; International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC
| | - Long-Sheng Lu
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC; International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC; Department of Radiation Oncology, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan, ROC
| | - Lekshmi Rethi
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC
| | - Fwu-Long Mi
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC; Department of Biochemistry and Molecular Cell Biology, School of Medicine, Taipei Medical University, Taipei, Taiwan, ROC; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC; Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC.
| | - Er-Yuan Chuang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC; International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan, ROC; Cell Physiology and Molecular Image Research Center, Taipei Medical University-Wan Fang Hospital,111, Sec.3, Xinglong Road, Wenshan District, Taipei 116, Taiwan, ROC.
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15
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Liu J, Luthuli S, Wu Q, Wu M, Choi JI, Tong H. Pharmaceutical and Nutraceutical Potential Applications of Sargassum fulvellum. BIOMED RESEARCH INTERNATIONAL 2020; 2020:2417410. [PMID: 33110917 PMCID: PMC7582070 DOI: 10.1155/2020/2417410] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/24/2020] [Indexed: 02/06/2023]
Abstract
Sargassum fulvellum is a brown seaweed of the Sargassaceae family which has been demonstrated to exhibit antipyretic, analgesic, antiedema, antimicrobial, antioxidant, antitumor, neuroprotective, anticoagulative, anti-inflammatory, and hepatoprotective activities. It has been widely used as a food additive and as a medicine in oriental medicine to treat lumps, dropsy, swelling, testicular pains, and urinary problems. S. fulvellum has been identified as a potential producer of a wide spectrum of natural compounds such as carotenoids, fucoidans, and phlorotannins, showing different biological activities in various industrial applications including pharmaceutical, nutraceutical, cosmeceutical, and functional food. However, the promising health effects associated with the extracts and compounds isolated from S. fulvellum have not been reviewed to date. The present review thus focuses on the biological activity of S. fulvellum as reported by previous publications, which include antioxidant, anticoagulant, anti-inflammatory, neuroprotective, immunomodulatory, antidiabetic, and anticancer effects. Thus, this review might serve to increase the utilization of this invaluable natural source as a potential component in pharmaceutical and nutraceutical applications.
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Affiliation(s)
- Jian Liu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Sibusiso Luthuli
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Qifang Wu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Mingjiang Wu
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Jong-il Choi
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Haibin Tong
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
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16
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Cheng TM, Li R, Kao YCJ, Hsu CH, Chu HL, Lu KY, Changou CA, Chang CC, Chang LH, Tsai ML, Mi FL. Synthesis and characterization of Gd-DTPA/fucoidan/peptide complex nanoparticle and in vitro magnetic resonance imaging of inflamed endothelial cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:111064. [DOI: 10.1016/j.msec.2020.111064] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/25/2020] [Accepted: 05/05/2020] [Indexed: 01/10/2023]
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17
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Suprunchuk VE. Low-molecular-weight fucoidan: Chemical modification, synthesis of its oligomeric fragments and mimetics. Carbohydr Res 2019; 485:107806. [DOI: 10.1016/j.carres.2019.107806] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/05/2019] [Accepted: 09/05/2019] [Indexed: 01/18/2023]
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18
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Isolation of crude fucoidan from Sargassum wightii using conventional and ultra-sonication extraction methods. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.bcdf.2019.100200] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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19
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Zhi Z, Li J, Chen J, Li S, Cheng H, Liu D, Ye X, Linhardt RJ, Chen S. Preparation of low molecular weight heparin using an ultrasound-assisted Fenton-system. ULTRASONICS SONOCHEMISTRY 2019; 52:184-192. [PMID: 30559077 PMCID: PMC6475493 DOI: 10.1016/j.ultsonch.2018.11.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 11/13/2018] [Accepted: 11/19/2018] [Indexed: 06/09/2023]
Abstract
Heparin, a high-molecular weight acidic polysaccharide, has raised much interest in the field of biomedical research due to its multiple bio-functions. The anticoagulant application of heparin in routine clinical practice, however, has been limited as the large molecular size of heparin can reduce its subcutaneous bioavailability and lead to severe adverse consequences such as thrombocytopenia. Here, we report a highly efficient and convenient method to depolymerize high-molecular weight, unfractionated heparin (UFH), into low molecular weight heparin (LMWH) by combining physical ultrasonic treatment with the chemical Fenton reaction, referred to as sono-Fenton. We found that this combination treatment synergistically degraded UFH into a LMWH of 4.87 kDa within 20 min. We characterized the mechanism of sono-Fenton heparin degradation through multiple approaches, including HPLC-SAX, disaccharide composition, FT-IR, NMR and top-down analysis, and found that the uronic acid residue in heparin was the most susceptible site attacked by OH radicals produced in the sono-Fenton process. Importantly, the LMWH prepared by this method had significantly higher anticoagulant activity than UFH and other LMWHs. This approach represents an effective method to produce heparin with improved activity and should be potentially useful for heparin production in the pharmaceutical industry.
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Affiliation(s)
- Zijian Zhi
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Junhui Li
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Jianle Chen
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY 12180, USA
| | - Shan Li
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Huan Cheng
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Donghong Liu
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Xingqian Ye
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Robert J Linhardt
- Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY 12180, USA.
| | - Shiguo Chen
- Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China.
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20
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Saravana PS, Cho YN, Patil MP, Cho YJ, Kim GD, Park YB, Woo HC, Chun BS. Hydrothermal degradation of seaweed polysaccharide: Characterization and biological activities. Food Chem 2018; 268:179-187. [DOI: 10.1016/j.foodchem.2018.06.077] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 06/11/2018] [Accepted: 06/18/2018] [Indexed: 12/12/2022]
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21
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Sun XY, Wang JM, Ouyang JM, Kuang L. Antioxidant Activities and Repair Effects on Oxidatively Damaged HK-2 Cells of Tea Polysaccharides with Different Molecular Weights. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:5297539. [PMID: 30584463 PMCID: PMC6280578 DOI: 10.1155/2018/5297539] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 08/07/2018] [Accepted: 09/10/2018] [Indexed: 01/04/2023]
Abstract
This study aims at investigating the antioxidant activity and repair effect of green tea polysaccharide (TPS) with different molecular weights (Mw) on damaged human kidney proximal tubular epithelial cells (HK-2). Scavenging activities on hydroxyl radical (·OH) and ABTS radical and reducing power of four kinds of TPS with Mw of 10.88 (TPS0), 8.16 (TPS1), 4.82 (TPS2), and 2.31 kDa (TPS3) were detected. A damaged cell model was established using 2.6 mmol/L oxalate to injure HK-2 cells. Then, different concentrations of TPSs were used to repair the damaged cells. Index changes of subcellular organelles of HK-2 cells were detected before and after repair. The four kinds of TPSs possessed radical scavenging activity and reducing power, wherein TPS2 with moderate Mw presented the strongest antioxidant activity. After repair by TPSs, cell morphology of damaged HK-2 cells was gradually restored to normal conditions. Reactive oxygen species production decreased, and mitochondrial membrane potential (Δψm) of repaired cells increased. Cells of G1 phase arrest were inhibited, and cell proportion in the S phase increased. Lysosome integrity improved, and cell apoptotic rates significantly reduced in the repaired group. The four kinds of TPSs with varying Mw displayed antioxidant activity and repair effect on the mitochondria, lysosomes, and intracellular DNA. TPS2, with moderate Mw, showed the strongest antioxidant activity and repair effect; it may become a potential drug for prevention and treatment of kidney stones.
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Affiliation(s)
- Xin-Yuan Sun
- Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
| | - Jian-Min Wang
- Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
| | - Jian-Ming Ouyang
- Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
| | - Li Kuang
- Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
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22
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Patil NP, Le V, Sligar AD, Mei L, Chavarria D, Yang EY, Baker AB. Algal Polysaccharides as Therapeutic Agents for Atherosclerosis. Front Cardiovasc Med 2018; 5:153. [PMID: 30417001 PMCID: PMC6214344 DOI: 10.3389/fcvm.2018.00153] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 10/08/2018] [Indexed: 12/20/2022] Open
Abstract
Seaweed-derived polysaccharides including agar and alginate, have found widespread applications in biomedical research and medical therapeutic applications including wound healing, drug delivery, and tissue engineering. Given the recent increases in the incidence of diabetes, obesity and hyperlipidemia, there is a pressing need for low cost therapeutics that can economically and effectively slow the progression of atherosclerosis. Marine polysaccharides have been consumed by humans for millennia and are available in large quantities at low cost. Polysaccharides such as fucoidan, laminarin sulfate and ulvan have shown promise in reducing atherosclerosis and its accompanying risk factors in animal models. However, others have been tested in very limited context in scientific studies. In this review, we explore the current state of knowledge for these promising therapeutics and discuss the potential and challenges of using seaweed derived polysaccharides as therapies for atherosclerosis.
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Affiliation(s)
- Nikita P Patil
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, United States
| | - Victoria Le
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, United States
| | - Andrew D Sligar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, United States
| | - Lei Mei
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, United States
| | - Daniel Chavarria
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, United States
| | - Emily Y Yang
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, United States
| | - Aaron B Baker
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, United States.,Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX, United States.,Institute for Computational Engineering and Sciences, University of Texas at Austin, Austin, TX, United States.,Institute for Biomaterials, Drug Delivery and Regenerative Medicine, University of Texas at Austin, Austin, TX, United States
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Guo D, Yu K, Sun XY, Ouyang JM. Structural Characterization and Repair Mechanism of Gracilaria lemaneiformis Sulfated Polysaccharides of Different Molecular Weights on Damaged Renal Epithelial Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:7410389. [PMID: 30174781 PMCID: PMC6098909 DOI: 10.1155/2018/7410389] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 04/30/2018] [Accepted: 07/12/2018] [Indexed: 12/24/2022]
Abstract
Natural Gracilaria lemaneiformis sulfated polysaccharide (GLP0, molecular weight = 622 kDa) was degraded by H2O2 to obtain seven degraded fragments, namely, GLP1, GLP2, GLP3, GLP4, GLP5, GLP6, and GLP7, with molecular weights of 106, 49.6, 10.5, 6.14, 5.06, 3.71, and 2.42 kDa, respectively. FT-IR and NMR results indicated that H2O2 degradation does not change the structure of GLP polysaccharides, whereas the content of the characteristic -OSO3H group (13.46% ± 0.10%) slightly increased than that of the natural polysaccharide (13.07%) after degradation. The repair effects of the polysaccharide fractions on oxalate-induced damaged human kidney proximal tubular epithelial cells (HK-2) were compared. When 60 μg/mL of each polysaccharide was used to repair the damaged HK-2 cells, cell viability increased and the cell morphology was restored, as determined by HE staining. The amount of lactate dehydrogenase released decreased from 16.64% in the injured group to 7.55%-13.87% in the repair groups. The SOD activity increased, and the amount of MDA released decreased. Moreover, the mitochondrial membrane potential evidently increased. All polysaccharide fractions inhibited S phase arrest through the decreased percentage of cells in the S phase and the increased percentage of cells in the G2/M phase. These results reveal that all GLP fractions exhibited repair effect on oxalate-induced damaged HK-2 cells. The repair ability is closely correlated with the molecular weight of the fractions. GLP2 with molecular weight of about 49.6 kDa exhibited the strongest repair effect, and GLP with higher or lower molecular weight than 49.6 kDa showed decreased repair ability. Our results can provide references for inhibiting the formation of kidney stones and developing original anti-stone polysaccharide drugs.
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Affiliation(s)
- Da Guo
- Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
| | - Kai Yu
- Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
| | - Xin-Yuan Sun
- Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
| | - Jian-Ming Ouyang
- Institute of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
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Kuznetsova TA, Persiyanova EV, Ermakova SP, Khotimchenko MY, Besednova NN. The Sulfated Polysaccharides of Brown Algae and Products of Their Enzymatic Transformation as Potential Vaccine Adjuvants. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300837] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The review is devoted to critical analysis of literature data, deal with effects and mechanisms of action of sulfated polysaccharides (PSs) – fucoidans from brown algae and products of their enzymatic transformation as potential adjuvants for enhancement of anti-infective and antitumor immune response. Numerous experimental data indicate that sulfated PSs demonstrate properties of vaccine adjuvants. Application perspectiveness of fucoidans as vaccine adjuvants is defined by their high biocompatibility, low-toxicity, safety and good tolerance by macroorganism, and also mechanisms of their immunomodulatory action. In particular, fucoidans are agonists of receptors of innate immunity and strong inducers of cellular and humoral immune response. At presenting the data of structural - functional interrelations, attention focused to the defining role of degree of sulfation, uronic acids and polyphenols contents, and also molecular mass in actions of fucoidans to innate and adaptive immunity cells. Insufficiency of literary data on studying of correlation of structure – physicochemical characteristics with adjuvanticities of the sulfated PSs, and also the problem of standardization of their active fractions are noted. Special attention is paid to the analysis of immunomodulatory and adjuvant activity of fucoidan oligosaccharides. Presented here results of experimental trial indicate that, despite the difficulties due to preparation of highly purified structurally characterized fractions and complex structure of fucoidans, these substances can be used as safe and effective adjuvants in vaccines against various pathogens including viruses, and also in antitumor vaccines.
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Affiliation(s)
- Tatyana A. Kuznetsova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
- Far Eastern Federal University, School of Biomedicine, bldg. M25 FEFU Campus, Ajax Bay, Russky Isl., 690922 Vladivostok, Russian Federation
| | - Elena V. Persiyanova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
| | - Svetlana P. Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Pr. 100-letya Vladivostoka 159, 690022, Vladivostok, Russian Federation
| | - Maxim Yu. Khotimchenko
- Far Eastern Federal University, School of Biomedicine, bldg. M25 FEFU Campus, Ajax Bay, Russky Isl., 690922 Vladivostok, Russian Federation
| | - Natalya N. Besednova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
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Gradual degradation of fucoidan from Fucus vesiculosus and its effect on structure, antioxidant and antiproliferative activities. Carbohydr Polym 2018; 192:208-216. [PMID: 29691015 DOI: 10.1016/j.carbpol.2018.03.056] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 03/08/2018] [Accepted: 03/17/2018] [Indexed: 12/11/2022]
Abstract
The fucose-containing sulfated polysaccharides (syn. fucoidans) from brown algae exhibit a wide range of bioactivities and are therefore considered promising candidates for health-supporting and medical applications. During the past three decades, research on isolation, molecular characterization, and screening of in vitro and in vivo pharmacological activities has significantly increased. Until now, however, fucoidans are only used as ingredients in cosmetics and food supplements, especially due to the proclaimed antioxidant activities of fucoidan. One obstacle to medical applications is the usually high molecular mass of native fucoidans, as it is associated with unfavorable biopharmaceutical properties and possibly undesired effects. Therefore, it seems reasonable to develop fucoidan derivatives with reduced size. So far, in this study, fucoidan from Fucus vesiculosus was gradually degraded from Mw 38.2 down to 4.9 kDa without concomitant desulfation. Compared to hydrothermal treatment, the degradation with H2O2 showed to be more efficient and additionally eliminated the antioxidant and antiproliferative activities of the genuine fucoidan. This confirmed our previous hypothesis that rather co-extracted compounds like terpenoids and polyphenols than the fucoidan itself exhibit these effects.
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Tsai LC, Tsai ML, Lu KY, Mi FL. Synthesis and evaluation of antibacterial and anti-oxidant activity of small molecular chitosan–fucoidan conjugate nanoparticles. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3341-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Flórez-Fernández N, González-Muñoz MJ, Domínguez H. Feasibility of posthydrolysis processing of hydrothermal extracts from Sargassum muticum. ALGAL RES 2017. [DOI: 10.1016/j.algal.2017.08.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Xu Y, Zhang Q, Luo D, Wang J, Duan D. Low molecular weight fucoidan modulates P-selectin and alleviates diabetic nephropathy. Int J Biol Macromol 2016; 91:233-40. [PMID: 27234491 DOI: 10.1016/j.ijbiomac.2016.05.081] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 05/09/2016] [Accepted: 05/22/2016] [Indexed: 10/21/2022]
Abstract
Diabetic nephropathy (DN) is a serious microvascular complication that can lead to chronic and end-stage renal failure. It is understood that inflammation is associated with the onset and process of DN. Low molecular weight fucoidan (LMWF) isolated from Saccharina japonica has anti-inflammatory properties. Therefore, this study aimed to explore the mechanism of LMWF in DN model induced by streptozotocin. The biochemical indices levels showed LMWF reduced the DN diagnostic indices to protect renal function. The HE stained sections exhibited LMWF protected normal morphological structures and reduced inflammatory cell infiltration in the kidneys of DN rats. Furthermore, the levels of P-selectin and selectin-dependent inflammatory cytokines resulting from LMWF were obviously decreased at both the transcriptional and protein levels. Thus, our results found that LMWF protected the renal function in DN rats and alleviated inflammation through the modulation of P-selectin and inflammatory cytokines. LMWF may have therapeutic potential against DN.
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Affiliation(s)
- Yingjie Xu
- Key Lab of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Lab for Marine Science and Technology. Qingdao 266071, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Quanbin Zhang
- Key Lab of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Lab for Marine Science and Technology. Qingdao 266071, China; State Key Lab of Seaweed Bioactive Substances, Qingdao 266000, China.
| | - Dali Luo
- Department of Pharmacology, School of Chemical Biology & Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Jing Wang
- Key Lab of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Lab for Marine Science and Technology. Qingdao 266071, China
| | - Delin Duan
- Key Lab of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Lab for Marine Science and Technology. Qingdao 266071, China; State Key Lab of Seaweed Bioactive Substances, Qingdao 266000, China.
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30
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Antioxidant activities of fucoidan degraded by gamma irradiation and acidic hydrolysis. Radiat Phys Chem Oxf Engl 1993 2015. [DOI: 10.1016/j.radphyschem.2014.12.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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